Presser-foot for sewing-machines.



JJBERGERJB. PRESSER FOOT FOR SEWING MACHINES.

APPLICATIDN FILED JULY 20.1915.-

Patented May 28,

UNITED STATES PATENT onnrcn.

J OSELPH BERGER, JR., OF UTICA, NEW YORK, ASSIGNOR TO UNION SPECIALMACHINE COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

PRESSER-FOOT FOR SEWING-MACHINES.

Application filed July 20, 1915.

presser foot which cooperates with a feeding and trimming and astitching mechanism for joining or covering the edges of fabricsections.

An object of the invention is to construct a presser foot of the abovecharacter having means for supporting the stationary member of atrimi'ning mechanism and also a guiding channel for directing the upturned edges of fabric sections to said trimming mechanism, with needleopenings adapted to receive needles arranged in pairs, one in rear ofthe other, wherein the needles of the respective pairs are staggeredrelative to each other.

A still further object of the invention is to provide a device of theabove character with a strip guide for directing the trimmedbif stripwhich strip guide is made in sections, one of which is movable so as tofacilitate the threading of the needles or the changing of theneedles.

These and other objects will in part be obvious, and will in part behereinafter more fully disclosed. I

In the drawings which show by way of illustration one embodiment of theinvention,

Figure 1 is a view in side elevation, showing a presser foot having myimprovements and also the end of the work support, the needle bar andneedles. and a portion of the supporting head of the machine, the footbeing elevated;

Fig. 2 is a front view of my improved presser foot;

Fig. 3 is a plan view of the same showing also the movable trimmingmember; and

Fig. et is a perspective view of the presser foot with parts thereofdetached and with Specification of Letters Patent.

Patented May 28, 1918.

Serial No. 40,896.

the strip deflector turned to one side whereby access may be had to theneedles.

My improved presser foot consists of the main supporting shank 1, whichis carried by a presser bar extending into the socket 2. This presserfoot is formed with a main presser foot section 3 which is rigid on theshank l and a yielding or auxiliary presser foot section 4 which isslidingly supported by said shank. section at is formed with anauxiliary shank This shank fits between the lugs 6 and T on the mainshank 1 and a cover plate 8 secured by screws 99 to the lug T whichholds the auxiliary shank on the main shank but permits the same toslide vertically.

A spring 10 secured by a screw 11 to the main shank 1 of the presserfoot, extends upwardly and forwardly over the auxiliary shank as at 12.This spring bears on an upwardly projecting lug 13 formed integral withthe shank 5. Said spring normally forces the section 4 downwardly sothat the lower face thereof projects below the lower face of the mainsection 3.

The auxiliary shank 5 is formed with an elongated vertical slot I l anda screw 15 passes through the cover plate 8, the elongated slot 14 andis threaded into the opening 16 in the main shank. This screw limits thedownward movement and the lug 6 limits the upward movement of theauxiliary portion 4 of the presser foot.

The main section 3 of the presser foot is provided with two needleopenings 17 and 18; and the foot is provided with two stitch tongues 19and 19 which respectively extend into said openings. The needle opening18 is in rear of the needle opening 17, and as shown in Fig. 3 saidopenings are offset or staggered relative to each other in the directionof the line of feed. The needles 20 and 21 enter the needle opening 17on opposite sides of the stitch tongue 19, while the needles 22 andenter the needle opening 18 on the opposite side of the stitch tongue19' in said opening. A suitable cross stitch-forming mechanismcotiperates with each pair of needles above and below the material andtwo independent seams are. therefore, made by the respective pairs ofneedles, which seams overlap each other as above noted.

The main section of the foot 3 has a for- The auxiliary fill wardlv andupwardly projecting portion 2i. This forwardly projectlng portion is setback from the inner edge of the main inner edge 27. of this portion 26is spaced from the inner edge 28 of the projecting portion thus forminga tabrioguiding channel 29.

A stationary trimmer blade 30 is seated in a recess in the upper face ofthe presser foot and is held therein by a clamping plate 31 and aclamping screw The cutting edge of the stationary trmnning member issubstantially in hue with the inner edge '28 of the projecting portion2a. This inner.

edge 28 isin a line passing between the. stitch tongue in the needleopenings 17 and 18. Coiiperating with the stationary trimming member 30is a movable trimming member 33. This stationary triming member iscarried by the main fixed section of the presser foot, and, therefore,the edges of the fahricwill be trimmed at a-uniform distance above thelower face of the main section of the foot.

A strip deflector 3st is secured by screws .35 to an arm 36 which ispivoted at 3? to the projecting portion on the main shank l spring .38is secured to the arm 36 by screws 39. This spring bears against theflat face of the projection carrying the pivot 37 andwill hold the stripdeflector in the position shown in Fig. 3 of the drawings. When saidstrip deflector is turned to the position shown in Fig. l, then saidspring bears against the rear face of said projectionand holds thedeflector in this position shown in said Fig. 4.

The strip deflector 3-Clis formed in two sections. The section 39 isrigidly secured to the. main section of the presser foot and. extendsacross the guiding channel The outer end of this fixed section of thestrip deflector bears against a vertical. lug 2L0 secured to theauxiliary section l ot the presse-r foot by a screw all. This log servesto prevent the free end of the strip deflector from being forcedrearwardly by the fabric. Said fixed section 39 cut awa on its underface to form a clearance for the movable trimming blade As the free endof the strip deflector Inerel rests against the lug 40, the auxiliarysection of the presser :toot has free vertical movements.

Themovable section of the strip deflector isrshaped to conform in ageneral way with the fixed section and the lower edge of said movablesection willturn freely above the raised portionsof the presser tootwhich 7 clamp thestationary trimming member.

The presser foot cooperates with the feed ing mechanism 42 operating atthe free end of the work supporting arm The main shank of the presserfoot has a rearwardly projecting arm it which is forked at, to so as toslidingly engage the auxiliary presser bar 4:6. This permits the presserfoot to be raised and lowered but holds the same from turning on thepresser bar or the presser bar from turning, due to thelateral force ofthe trinnning operation.

it is obvious that minor changes in the details of construction andarrangement of parts may be made without departingt'rom the spirit ofthe invention as set forth in the appended claims.

Having thus described my invention, what I claim as new and desire tosecure by LettersPatent, is: I

1. A presser foot for sewing machines including in combination, asupporting shank, a main foot portion rigidly connected to said shankand having means for supporting the stationary member of a trimmingmechanism, said presser toot having a guiding channel for directing theedges to be trimmed to the trimming mechanism, said foot portion havingneedle openings therein, one of said o'peningsbeing inrear of the otherand oflset relative thereto in the direction of the line of feed. I

2. A .presser foot for sewing machines including in combination, asupporting shank, a main foot portion rigidlyconnected including incombination, a supportin shank, a main foot portion rigidly connected tosaid shank and having means for supporting the stationary member of atrimming mechanism, said foot portion having a guiding channel fordirecting the edges to be trimmed to the trimming mechanism, a stripdeflector carried by the presser foot and extending across said guidingchannel for deflecting the trinnned ofl strip away from the needles,said strip deflector being formed in sections, one of which is fixed tothe presser foot and the other of which is movably supported thereby.

l. A presser foot for sewing machines including in combination, asupporting,

shank, a main foot portion rigidly connected to said shank and havingmeans for supporting the stationary member of a trimming mechanism, saidpresser foot having a guiding channel for directing the edges to betrimmed to the trimming mechanism,

a strip deflector carried by the presser foot and extending across saidguiding channel for deflecting the trimmed off strip away from theneedles, means for pivotally supporting said strip deflector, whereby'the same may be turned away from the needles to give access thereto forthreading, and a spring for holding the strip deflector in eitheroperative or inoperative position.

5. A presser foot for sewing machines including in combination, asupporting shank, a main foot portion rigidly connected to said shankand having means for sup porting the stationary member of a trimmingmechanism, said foot portion having a guiding channel for directing theedges to be trimmed to the trimming mechanism,

a strip deflector carried by the presser foot and extending across saidguiding channel for deflecting the trimmed off strip away from theneedles, said strip deflector being formed in sections, one of which isfixed to the presser foot and the other of which movably supportedthereby, said movable section being so disposed as to swing above theclamp for the stationary trimming member, and a spring for holding saidmovable section in operative position.

In testimony whereof, I aflix my signature in the presence of twoWitnesses.

JOSEPH BERGER, JR. WVitnesses:

EARL C. CLARK, L. D. MoCoRMAo.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents,

Washington, D. 0.

